What's that? It is 4680 O's. 4680 is a number you get when you multiple the number of weeks in a year (52) with the number of years a healthy person in the western world can optimistically expect to live (90).

What we get is the number 4680. One "O" for every week you will exist.

I think this is wonderful, because it gives so much perspective on how short life is. And how important every week is. Thoughts such as "That was a pretty unproductive week. Nevermind, next week I will work on my big dream. Or maybe the week after that" suddenly seem a bit more dramatic.

Well. Have a look at your big dreams. The ones you hope to achieve in your life. Then have a look at the O's above. That's the number of weeks you have. Or rather, subtract the number of O's you have already consumed. I, for example, who is soon 33 years old, have about this many weeks until I reach the age of 90.